If you have the KY-008 laser module for your Arduino (or other development board) and the corresponding laser sensor, it can be a pain when testing a circuit sometimes as you tend to run out of hands. This set of 3 pieces will hold the laser the sensor and allow them to be slid into a base which stands on its own. The laser is aligned with the sensor (which is slightly offset from centre). If you need to test further distances you can just scale the z axis up on the base on the slicer. The modules are not super tight so they can easily be inserted and removed. If you have any variation that you would like me to adapt this model for just let me know.

If you would like some tips on basic electronics then please check out my YouTube channel DonLabs
https://youtu.be/-O45sdimUyU

Creality

Ender 3

No

No

0.2

20%

3 top layers, 3 bottom layers, 2 walls (perimeters), print parts stood up with the largest flat face on the bed so you do not need supports. should be able to print the 2 small ones with no brim but the tall base you will need a brim to make sure it does not fall over. Base should take about an hour and the other two bits about 30 mins each printed individually.

Just clean up the edges a little especially if you have used brim and just peeled it off rather than cutting it off. Push the bits into the base and just slide them up and down a couple times to make sure they are not too tight. Standard stuff really.